Caroline Wozniacki launched her bid for a fifth straight New Haven WTA title on Monday with a 6-3, 6-3 first-round victory over Russia’s Ekaterina Makarova. Wozniacki, seeded third in a field headed by Wimbledon runner-up Agnieszka Radwanska, needed an hour and 21 minutes to book a second-round clash with Sweden’s Sofia Arvidsson, a 6-4, 6-1 winner over Melanie Oudin of the United States. A fifth successive title in the hardcourt tune-up for the US Open would put former world number one Wozniacki in elite company. Only Steffi Graf, Martina Navratilova and Chris Evert have won the same WTA Tour title five or more times in a row.